refactor(mobile): read only the rows of a server's workspace list

The desktop no longer sends a freshness flag, so the phone's schema drops it.
The relay capability list names the delegated-devices constant instead of
repeating its literal, which also retires a now-circular type check.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

mobile/src/files/MobileFilePreviewScreen.tsx

@@ -36,6 +36,7 @@ type Props = {
 }
 
 export function MobileFilePreviewScreen({ route }: Props) {
+  // Why: every workspace screen uses the handoff so it shares the route chunk; else the bundle overruns its asset budget.
   const router = useWorkspaceRouteHandoff()
   const previewParams = route.ok ? route.params : null
   const { client, state: connState } = useWorkspaceClient(previewParams?.hostId)

mobile/src/host-screen/host-server-workspaces-wiring.test.ts

@@ -76,7 +76,7 @@ function desktop({ hostWorktrees, carriesExecutionHost }: Desktop = {}): FakeSes
         const { hostId } = z.object({ hostId: z.string() }).parse(params)
         const result = hostWorktrees
           ? hostWorktrees(hostId)
-          : { worktrees: [row(`${hostId}-wt`, hostId)], stale: false, fetchedAt: 1 }
+          : { worktrees: [row(`${hostId}-wt`, hostId)] }
         if (result instanceof Error) {
           throw result
         }
@@ -244,7 +244,7 @@ describe("a desktop's server workspaces on the phone", () => {
       hostWorktrees: (hostId) =>
         failing && hostId === 'runtime:vm'
           ? new Error('timed out')
-          : { worktrees: [row(`${hostId}-wt`, hostId)], stale: false, fetchedAt: 1 }
+          : { worktrees: [row(`${hostId}-wt`, hostId)] }
     })
     const screen = await mountScreen(client, RELAYS)
     failing = true
@@ -255,7 +255,7 @@ describe("a desktop's server workspaces on the phone", () => {
       method === 'mobileRelay.hosts.list'
         ? reply({ hosts: [HOSTS[1]] })
         : method === 'mobileRelay.hosts.worktrees'
-          ? reply({ worktrees: [row('stray', 'runtime:vm')], stale: true, fetchedAt: 1 })
+          ? reply({ worktrees: [row('stray', 'runtime:vm')] })
           : reply({ worktrees: [row('mac-wt', 'local')], snapshotId: 's1' })
     )
     await screen.poll()

mobile/src/worktree/server-workspace-operations.ts

@@ -64,10 +64,7 @@ export const relayHostWorktreesRead = bindDeferredRpcOperation(
     barrier: 'after-caller-barrier',
     read: rpcResultVariant(
       'relay-host-worktrees',
-      z.looseObject({
-        worktrees: z.array(z.unknown()).nullable(),
-        stale: z.boolean().optional()
-      })
+      z.looseObject({ worktrees: z.array(z.unknown()).nullable() })
     )
   })
 )

src/shared/delegated-mobile-device-contract.ts

@@ -1,11 +1,10 @@
 import { z } from 'zod'
-import type { RUNTIME_CAPABILITIES } from './protocol-version'
 
 // Why: a paired desktop relays each of its phones to this host as an ordinary phone device it owns.
 export const DELEGATED_MOBILE_DEVICE_SYNC_METHOD = 'pairing.delegatedMobileDevice.sync'
-// Why: a desktop relays phones only to a host advertising this; `satisfies` ties it to RUNTIME_CAPABILITIES.
+// Why: a desktop relays phones only to a host advertising this (via MOBILE_RELAY_RUNTIME_CAPABILITIES).
 export const DELEGATED_MOBILE_DEVICES_RUNTIME_CAPABILITY =
-  'pairing.delegated-mobile-devices.v1' satisfies (typeof RUNTIME_CAPABILITIES)[number]
+  'pairing.delegated-mobile-devices.v1' as const
 export const DELEGATED_MOBILE_DEVICE_SYNC_MAX_PHONES = 32
 export const DELEGATED_PHONE_NAME_MAX_CHARS = 128
 

src/shared/mobile-desktop-relay-contract.ts

@@ -1,9 +1,11 @@
+import { DELEGATED_MOBILE_DEVICES_RUNTIME_CAPABILITY } from './delegated-mobile-device-contract'
+
 // Why: a phone may put `executionHost` on a request only after its desktop advertises this; an older
 // desktop ignores the field and would run the call on itself.
 export const MOBILE_DESKTOP_RELAY_RUNTIME_CAPABILITY = 'mobile.desktop-relay.v1' as const
 
 /** A desktop relays a phone to a server that mints delegated phone devices; each side advertises. */
 export const MOBILE_RELAY_RUNTIME_CAPABILITIES = [
-  'pairing.delegated-mobile-devices.v1',
+  DELEGATED_MOBILE_DEVICES_RUNTIME_CAPABILITY,
   MOBILE_DESKTOP_RELAY_RUNTIME_CAPABILITY
 ] as const